i1 : f = random(ZZ^6, ZZ^4) o1 = | 1 8 6 4 | | 1 9 9 4 | | 4 7 5 7 | | 6 5 8 2 | | 2 1 8 2 | | 4 8 1 3 | 6 4 o1 : Matrix ZZ <--- ZZ |
i2 : M = subquotient ( f * diagonalMatrix{2,3,8,21}, f * diagonalMatrix{2*11,3*5*13,0,21*5} ) o2 = subquotient (| 2 24 48 84 |, | 22 1560 0 420 |) | 2 27 72 84 | | 22 1755 0 420 | | 8 21 40 147 | | 88 1365 0 735 | | 12 15 64 42 | | 132 975 0 210 | | 4 3 64 42 | | 44 195 0 210 | | 8 24 8 63 | | 88 1560 0 315 | 6 o2 : ZZ-module, subquotient of ZZ |
i3 : factor M ZZ ZZ ZZ o3 = ZZ + -- + -- + ---- 5 11 5*13 o3 : Expression of class Sum |